... advanced, laid siege to the town, and assaulted it twice (Nov. 18 and 29), but was repulsed. Meantime Grant had defeated Bragg at Chattanooga, and Sherman, with 25,000 men, was on the way to leave Knoxville . Livingstone, compelled to raise the siege, therefore, retired up the Holston River, but did not entirely abandon eastern Tennessee until the next spring, when he again joined Lee in Virginia. ...